A story of team members, trust chains, and a carefully choreographed dance
This is the star of the show: a tiny, tamper-proof computer chip soldered inside your phone or smartwatch. If a bad guy tries to poke it open, it self-destructs its secrets! The Vault can hold multiple profiles and check ID badges using math so hard that even the world's fastest computer couldn't crack it.
A powerful server somewhere on the internet. When your carrier says "make a key for this person," the Key Maker builds one. But here's the cool part: it locks the key so it only works in your specific Vault. Even if someone stole the key mid-delivery, it would be useless to them!
The Notifier is a digital post office: when your key is ready, it leaves a note: "Hey, phone XYZ has a package!" The Assistant is the app on your phone that runs messages between everyone. But it can never see the secret codes. It's like a postal worker delivering a sealed, locked box!
Your mobile carrier tells the Key Maker what to build. The trust chain runs top to bottom: the GSMA signs the Key Maker's badge, and the Vault checks it. The Vault also has its own badge proving it came from a real factory. The Assistant? Nobody cryptographically trusts it: it's just a delivery person!
LPAd: The Assistant app runs on your phone's main processor. This is how smartphones do it.
LPAe: For tiny devices like smart sensors or car modules, the Assistant lives right inside the Vault chip itself! No phone needed.
There are thirteen different pathways (called interfaces) connecting these five helpers. Each one has a specific job: some for ordering keys, some for delivering them, some for checking the post office. It's like a carefully choreographed dance!